8465 aggressive-loop-optimizations error in rt2860.c

*** 17,26 ****
--- 17,27 ----
  # information: Portions Copyright [yyyy] [name of copyright owner]
  #
  # CDDL HEADER END
  #
  #
+ # Copyright 2017 Gary Mills
  # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
  
  #
*** 66,75 ****
--- 67,85 ----
  
  CERRWARN        += -_gcc=-Wno-unused-label
  CERRWARN        += -_gcc=-Wno-parentheses
  CERRWARN        += -_gcc=-Wno-unused-value
  
+ # Prevent the error with gcc-4.9.4: iteration 35u invokes undefined behavior
+ GCC_VERS:sh = ${GCC_ROOT}/bin/gcc --version | \
+     head -1 | \
+     sed -e 's/([^(]*)//g' -e 's/^.* //'
+ ADD.$(GCC_VERS) = -_gcc=-fno-aggressive-loop-optimizations
+ ADD.4.4.4 =
+ ADD.3.4.3 =
+ $(OBJS_DIR)/rt2860.o := CFLAGS += $(ADD.$(GCC_VERS))
+ 
  #
  #       Default build targets.
  #
  .KEEP_STATE: